Home
Class 12
PHYSICS
Assertion (A) : A lamp is connected in s...

Assertion (A) : A lamp is connected in series with a capacitor and ac source connected across their terminal consequently current flow in the circuit and the lamp will shine.
Reason (R ) : Capacitor block dc current and allow ac current

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion.

B

Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

Assertion is true but Reason is false

D

Assertion is false but Reason is true

Text Solution

Verified by Experts

The correct Answer is:
1

`X_(C ) = (1)/(2 pi fC)`
for `dc f = 0` then `X_(L) = oo`
for `ac f != 0` then `X_(C ) =` finite
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - I (C.W)|23 Videos
  • ALTERNATING CURRENT

    NARAYNA|Exercise LEVEL - II (C.W)|11 Videos
  • ALTERNATING CURRENT

    NARAYNA|Exercise C.U.Q|66 Videos
  • ATOMIC PHYSICS

    NARAYNA|Exercise LEVEL-II (H.W)|14 Videos

Similar Questions

Explore conceptually related problems

A lamp is connected is series with a a capacitor and an AC source, what happens if the capacity of the capacitor is reduced ?

An eletric lamp connected in series with a capacitor and an a.c. source is glowing with certain brightness. How does the brighness of the lamp change on reducing the capacitance ?

A 30 mu F capacitor is connected to a 150 V, 60 Hz ac supply. The rms value of current in the circuit is

A lamp is connected in series with a capacitor. Predict your observations for dc and ac connections. What happens in each case if capacitance of the capacitor is reduced?

A 10muF capacitor is connected across a 200V , 50Hz A.C. supply. The peak current through the circuit is

Assertion: An electric lamp connected in series with a variable capacitor and AC source, its brightness increases with increases in capacitance. Reason: Capacitive reactance decrease with increases in capacitance of capacitor.

A conductor of capacity 1pF is connected to an A.C source of 220 V and 50 Hz frequency. The current flowing in the circuit will be